为什么NSURLSession uploadTaskWithRequest：fromData：无法上传到php服务器？ [英] Why does NSURLSession uploadTaskWithRequest:fromData: fail to upload to php server?
问题描述
php代码工作正常。我已经从同一台服务器上的html表单上传了文件。上传的文件范围从40K到2.0M，所以它不是大小。在运行PHP 5.3的服务器上激活文件上传
The php code works fine. Ive uploaded files from a html form on the same server. The files uploaded ranged from 40K to 2.0M so its not size. File uploads is activated on the server running PHP 5.3
我发现了很多这样的帖子（还没有答案）： https://stackoverflow.com/questions/19710388/using-nsurlsession-to-upload-an-image 。
I found many posts such as this one (without an answer yet):https://stackoverflow.com/questions/19710388/using-nsurlsession-to-upload-an-image.
这个使用uploadTaskWithRequest：fromFile：而不是fromData： NSURLSession确保上传工作
This one uses uploadTaskWithRequest:fromFile: instead of fromData:NSURLSession make sure Upload worked
这是NSURLSessionDataTask而不是uploadTaskWithRequest：没有使用NSURLSession接收数据
This is NSURLSessionDataTask instead of uploadTaskWithRequest:No data receiving with NSURLSession
有些帖子似乎说uploadTaskWithRequest：fromData：根本就没有工作：
NSURLSession：用b上传资产ackground transfer
使用NSURLSession进行异步上传不起作用，但同步NSURLConnection不起作用
和
将图像从iOS上传到PHP
And some posts that seem to say uploadTaskWithRequest:fromData: simply doesn't work: NSURLSession: uploading assets with background transfer asynchronous upload with NSURLSession will not work but synchronous NSURLConnection does and Upload image from iOS to PHP
我已经使应用程序返回HTTP代码，我得到代码200.服务器error_log文件上传后没有任何内容。一切似乎工作正常但无论发生什么，文件都不会写入服务器。有什么想法，我可以尝试找出什么是错的？
I have made the app such that it returns the HTTP code and I get code 200. The server error_log file has nothing in it after uploading. Everything seems to work fine but whatever happens, the file doesn't get written to the server. Any ideas what else I can try to find out whats going wrong?
这是PHP代码：
<?php
$file='';
$uploaddir='';
////////////////
echo 'file count=', count($_FILES),"\n";
var_dump($_FILES);
echo "\n";
////////////////
if(isset($_FILES['userfile']['name'])){
$uploaddir = './photos/'; //Uploading to same directory as PHP file
$file = basename($_FILES['userfile']['name']);
echo "file is set";
$uploadFile = $file;
$randomNumber = rand(0, 99999);
$newName = $uploaddir . $uploadFile;
if (is_uploaded_file($_FILES['userfile']['tmp_name'])) {
echo "Temp file uploaded. \r\n";
} else {
echo "Temp file not uploaded. \r\n";
}
if (move_uploaded_file($_FILES['userfile']['tmp_name'], $newName)) {
$postsize = ini_get('post_max_size'); //Not necessary, I was using these
$canupload = ini_get('file_uploads'); //server variables to see what was
$tempdir = ini_get('upload_tmp_dir'); //going wrong.
$maxsize = ini_get('upload_max_filesize');
echo "\r\n" . $_FILES['userfile']['size'] . "\r\n" . $_FILES['userfile']['type'] ;
}
}
?>
这是iOS代码：
- (void)uploadImage:(UIImage*)image {
// 0 Define URL
NSData *imageData = UIImageJPEGRepresentation(image, 0.6);
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"http://www.myserver.com/app/photos/uploadPhoto.php"]];
NSString *boundary = @"0xKhTmLbOuNdArY";
NSString *filename = [NSString stringWithFormat:@"someName.jpg"];
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];
[request setHTTPMethod:@"POST"];
NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *upLoadSession = [NSURLSession sessionWithConfiguration:config delegate:self delegateQueue:nil];
// 4 Create object to put content into...
NSMutableData *body = [NSMutableData data];
[request addValue:contentType forHTTPHeaderField:@"Content-Type"];
[body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"userfile\" filename=\"%@\"\r\n",filename]] dataUsingEncoding:NSUTF8StringEncoding]];
//[body appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"Content-Type: image/jpeg\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithData:imageData]];
[body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
//Not used with this:https://stackoverflow.com/questions/20893171/asynchronous-upload-with-nsurlsession-will-not-work-but-synchronous-nsurlconnect/20896632?noredirect=1#comment39074802_20896632
//[request setHTTPBody:body];
__block NSString *stringForText = @"Hola";
///////////////////////////////////////////////////
// 3
self.uploadTask = [upLoadSession uploadTaskWithRequest:request fromData:body completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
// ...
NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse*) response;
int errorCode = httpResponse.statusCode;
NSString *errorStatus = [NSString stringWithFormat:@"%d",errorCode];
NSString *responseString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSString *totalResponse = [errorStatus stringByAppendingString:responseString];
stringForText = totalResponse;
[self updateView:stringForText];
//UIAlertView *alertme = [[UIAlertView alloc] initWithTitle:@"error" message:totalResponse delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:nil];
//[alertme show];
// 4
self.uploadView.hidden = NO;
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];
}];
// 5
[_uploadTask resume];
}
-(void)updateView:(NSString*)texto{
dispatch_sync(dispatch_get_main_queue(), ^{
self.myTextView.text = texto;
});
}
我对该文件夹拥有777权限。正如我所说，我已经能够通过html表单上传并从同一个php脚本写入该文件夹。
I have 777 permissions on that folder. As I said, Ive been able to upload and thus write to that folder from the same php script via an html form.
对于http错误代码，totalResponse为200，对于php转储，count = 0以及array（0）{}。
The totalResponse is 200 for the http error code and count=0 as well as array(0) {} for the php dump.
以下是应用程序中服务器响应的图像：
Here is the image of the response from the server right in the app:
我在上传Temp文件后添加了这些行：
I added these lines after echoing Temp file uploaded:
$body = $HTTP_RAW_POST_DATA;
echo "\n REQUEST" . $body;
但我只有这个：
file count=1 array(1) { ["user file"]=> array(5) { ["name"]=> string(12) "DrinkCO2.png" ["type"]=> string(9) "image/png" ["tmp_name"]=> string(14) "/tmp/phpxg7oLZ" ["error"]=> int(0) ["size"]=> int(190550) } } file is setTemp file uploaded. REQUEST 190550 image/png
推荐答案
我遇到了问题在这里分号 - >
I had an issue with a semi-colon here->
"name=\"userfile\" ; filename=\"%@\"\r\n""
所以它基本上是一个畸形的身体。
So it was a malformed body basically.
这篇关于为什么NSURLSession uploadTaskWithRequest：fromData：无法上传到php服务器？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
